Datasheet

LUMEL S.A., ul. Słubicka 1, 65-127 Zielona Góra, Poland / tel.: [phone]/305/386, fax: [phone] / e-mail:[e-mail] /
www.lumel.com.pl
MOVING-IRON VOLTMETERS
with a change-over switch
EP27 and EP29 TYPES
APPLICATION
The EP27 and EP29 moving-iron panel voltmeter with a change-over
switch is adapted for measuring line-to-line and phase-to-phase RMS
voltages in 3-phase 4-wire power networks.
A six-positional switch installed on the meter frontal side enables the
choice of the measured voltage in six different points of the network
system.
BASIC REQUIREMENTS, USERS SAFETY
These moving-iron voltmeters are destined to be installed on panels
or switchboards. They are in conformity with EN 61010-1 standard
requirements.
TECHNICAL DATA
Frontal frame narrow, acc. DIN 43718
EP27 - 72 x 72 mm,
EP29 - 96 x 96 mm
Accuracy class
1.5
Measuring range:
- for direct interfacial
connection 500 V
- at the position of the
switch on L1-N, L2-N
or L3-N max. 300 V
- through a voltage
transformer x/100 V or x/110 V
Working position
given on the meter 5°(see table 1)
Panel material any
Power consumption  4.5 VA (Un = 500 V)
Working temperature range These meters are working
satisfactorily without damage
in the temperature range from
-25°C up to +40°C,
acc. standards being in force.
In this range, additional errors
are not defined if they are not
differently.
Rated operating
conditions: acc. EN-61010-1
- ambient temperature 5...23...40°C
- working position acc. order
 5° (given on the scale)
Additional errors in the
limits of rated operating
conditions acc. EN 60051-1
Safety requirements:
acc. EN 60010-1
- installation category III
- level of pollution 2
- maximal working
voltage in relation
to the earth 300 V a.c.
Protection grade:
- case IP 50
- terminals IP20 (with the terminal cover)
Electromagnetic compatibility:
The EP27 and EP29 voltmeters
fulfils CE mark
requirements:
- emission acc. EN 61000-6-4
- immunity acc. EN 61000-6-2
External dimensions:
- EP27 72 x 72 x 78 mm
(without a terminal cover)
- EP29 96 x 96 x 87 mm
(with a terminal cover)
Panel cut-out:
- EP27 68
+0,7
x 68
+0,7
mm
- EP29 92
+0,8
x 92
+0,8
mm
Case material ABS thermoplastics
Weight:
- EP27 200 g (without a terminal cover)
- EP29 290 g (with a terminal cover)
Category of climate versions
If it is not stipulated in another way, these meters are destined to
be applied in closed rooms, without air conditioning systems and in
conditions of a moderate climate, acc. EN 60068-1 standard.
On customers request, these meters can be adapted to be applied
in dry or wet tropical climate conditions, and also in closed rooms
without air conditioning.
Then, they are marked with the TIII symbol.
ACCESSORIES
We deliver together with the meter
- two screw holders to fix the meter on the panel,
- a terminal cover (only for EP29 volmeter),
- a voltage transformer (on request, if ordered),
- a service manual,
- a guarantee certificate.